Edward graham brown



(No Model.)

B. G. BROWN. PROCESS OF MANUPAGTURING COMPRESSED CAKES 0P SOAP. No.461,973. Patented 0ct.27,1891.

Wwas-es;

UNITED STATES PATENT OFFICE.

EDWARD GRAHAM BROIVN, OF BROOKLYN, NEW YORK, ASSIGN OR TO THECHESEBROUGH MANUFACTURING COMPANY, CONSOLIDATED, OF SAME PLACE.

PROCESS OF MANUFACTURING COMPRESSED CAKES OF SOAP.

SPECIFICATION forming part of Letters Patent No. 461,973, dated October27, 1891..

Application filed June 4, 1890. Serial No. 354,193- (No specimens.)

To all whom, it may concern:

Be it known that I, EDWARD GRAHAM BROWN, of Brooklyn, in the county ofKings and State of New York, have invented a new and useful Improvementin the Manufacture of Compressed Cakes of Soap, of which the followingis a specification, reference being had to the accompanying drawings.

The object of this invention is to remedy a defect which exists and isplainly visible in compressed cakes of soap, particularly intoilet-soap, as heretofore manufactured, the said defect consisting inawantof homogeneity in the different parts of the cake, the parts at theends and the parts in the middle havingdiiferentdensitiesorconsistencies. Thiswant of homogeneity or differenceof density shows itself in the different colors or tints of the body orbulk of the cake and the ends thereof, between which there is aplainly-visible line of demarcation.

The above-mentioned defect results from the method commonly practiced ofproducing the cakes from the bars into which the soap is previously madeby the press, generally known as a plodder, from which the soap isforced in the form of a continuous bar through a die of a formapproximating to the form of the transverse section in one direction ofthe cakes of soap to be produced. This method consists in cutting thebars squarely across into blocks of a length less than that of theintended length of the cakes and afterward transferring the said blocksinto dies of proper form, in which by pressure the parts of the soap atthe ends of the block are forced out endwise to fill the ends of thedies. In this operation the first action of the dies in their closingmovement is to displace the parts of the soap at the ends of the blockto make it fill the ends of the dies, and by this displacement the saidparts are so broken up that in the compression to which they aresubjected in common with the rest of the block or cake during thecontinuation and completion of the closing movement of the dies the saidparts are not made as dense as the rest of the block or cake, and hencethe diiference of appearance.

According to the present invention the bars of soap are not cut intoblocks previously to being placed in the dies, but they are takendirectly to the compressing-dies, by which portions of them of theproper length for the cakes of soap are cutoff and compressed into J thedesired form at one operation, and the cakes so produced are homogeneousand of uniform color or tint.

In order to explain more fully the nature of my invention, I haveillustrated in the accompanying drawings both the method commonlypracticed of producing the cakes and my improved method.

Figures 1 and 2 of the drawings represent vertical sections at rightangles to each other of a cake of toilet-soap of ordinary form, such asis produced by my invention. Fig. 3 represents a transverse section ofthe bar from which such cakes are produced both by the common method'andby my invention. Fig. 4 represents a central vertical section of a pairof compressing-dies such as are used according to the old method and maybe used according to my method for compressing the cakes, and shows thesaid dies open and having placed between them a block of soap previouslycut from a bar ready to be compressed according to the old method. Fig.5 is a vertical sectional view corresponding with Fig. 4 and showingthe-said dies closed and the block of soap compressed between them intoa cake. Fig. 6 represents a vertical section of a pair of dies similarto those shown in Fig. 4, showing them open and having the end of a barof soap placed between them ready to have a portion cut oh? andsimultaneously pressed into a cake according to my invention. Fig. 7 isa sectional view corresponding with Fig. 6, but showing the dies closedand the cake completed.

Similar letters of reference designate corresponding parts in all thefigures.

The dies represented are box-dies. A is the ICO according to the commonmethod, the bars of soap are made by cutting the latter squarely acrossat regular intervals.- It will be observed that this block is not longenough to fill the dies, and it will be understood by reference to Figs.4 and 5 that in order to make the soap in the block E fill the dies andform the cake D the parts a a must be displaced and forced into theparts I) c of the dies. In Fig. 5 the parts designated by a a, sodisplaced and which by reason of the breaking up or crushing 0rdisintegrating action to which they were first subjected by the actionof the dies, are tinted-ofa darker shade.

In Fig. 6 the bar of soap F is represented as placed directly betweenthe open dies and shown with its end projecting slightly beyond the diesB C. By the closing movement of the dies the portion of soap betweenthem is out from the bar and pressed to form the cake by the oneoperation of closing the dies, and

if there be more out off than is sufficient to fill the dies when theyare completely closed, as shown in Fig. 7, the surplus Will be forcedout from between the dies, as indicated at d d in the latter figure. Thecake thus formed is perfectly homogeneous throughout and the Whole ofits exterior is of uniform color.

l/Vhat I claim as my invention, and desire to secure by Letters Patent,is-

The herein-described method of forming machine-made tablets of soap,which consists in feeding to the die soap bars of the full length of thedie and longer than the completed tablet and subjecting the bars to thecutting and pressing action of said die moving at right angles to thebar, substantially as set forth.

EDWARD GRAHAM BROWN. Witnesses:

FREDK. HAYNES, C. E. SUNDGREN.

